Index: src/wp-includes/taxonomy.php
===================================================================
--- src/wp-includes/taxonomy.php	(revision 40900)
+++ src/wp-includes/taxonomy.php	(working copy)
@@ -2235,7 +2235,7 @@
 			$term_info = wp_insert_term($term, $taxonomy);
 		}
 		if ( is_wp_error($term_info) )
-			return $term_info;
+			continue;
 		$term_ids[] = $term_info['term_id'];
 		$tt_id = $term_info['term_taxonomy_id'];
 		$tt_ids[] = $tt_id;